I just set up my Vonage phone. I have a Panasonic Answering machine which I used before. I just called my house, and I have a message. When I enter the remote access code, the machine does not respond to the tones. Does anyone know how to fix this?

Thanks - this might help someone else. The machine was set up with a splitter. I have to swap the lines around once I got home and it worked. But I couldn't figure out why it wouldn't take the tones from outside the house